<!DOCTYPE html>
<html lang="en">
<head>
    <meta charset="UTF-8">
    <meta http-equiv="X-UA-Compatible" content="IE=edge">
    <meta name="viewport" content="width=device-width, initial-scale=1.0">
    <title>Document</title>
</head>
<body>
<div id="box">
    我是box
</div>
<ul>
    <li>1</li>
    <li>2</li>
    <li>3</li>
</ul>
<script src="js/myjq.js"></script>
<script>
    /*
var obj={
    a:function(){
        alert(1);
        return this;
    },
    b:function(){
        alert(2);
        return this;
    },
    c:function(){
        alert(3);
    },
}
obj.a();
obj.b();
obj.a().b().c();
*/
/*
var $=function(){
    return new String;
}
console.log($().slice);
*/
// console.log(document.querySelectorAll('#box'));
// console.log(document.querySelectorAll('ul li'));
console.log($('#box').css());
</script>
</body>
</html>